/Engine/Source/Runtime/CoreUObject/Public/UObject/PackageResourceManager.h
FindPackagesRecursive that returns PackageSegments
void FindPackagesRecursive ( [TArray](API\Runtime\Core\Containers\TArray)< TPair< [FPackagePath](API\Runtime\CoreUObject\Misc\FPackagePath), EPackageSegment >> & OutPackages, FStringView PackageMount, FStringView FileMount, FStringView RootRelPath, FStringView BasenameWildcard )